Action node can't write to file

Third party integrations Node-RED
1

I’m running HA 2025.2.2 with the latest Node-Red.
I have a flow that saves camera snapshots, these will be used with Gemeni AI, so they have to be in the www folder.

Following several topics I use ‘camera.snapshot’ to save the file :

image
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{"filename":"/homeassistant/www/snapshot/front_door1.jpg"}

But then I’m still getting this error :

"HomeAssistantError: Cannot write /homeassistant/www/snapshot/front_door1.jpg, no access to path; allowlist_external_dirsmay need to be adjusted inconfiguration.yaml"

In my configuration.yaml I already have :

homeassistant:
   allowlist_external_dirs:
    - /homeassistant

What am I doing wrong ?

2

If you are using home assistant OS the path is /config/www/snap...

3

Also tried that :

"HomeAssistantError: Cannot read `./local/www/snapshot/front_door1.jpg`, no access to path; `allowlist_external_dirs` may need to be adjusted in `configuration.yaml`"
4

To read the file use "/local/snapshot..."

5

Thanks, probably something else wrong. it looks like it’s saved :
image
But when I look in this folder, it’s empty. And then the read of that file also fails, because it’s not there.

6

Can you try these actions in home assistant to see where the problem is? In devtools → actions tab, you can run an action without needing to create a script/automation.